package jiangjie3;
//商品类
public class Goods  implements Comparable{
    private String name;
    private double price;

    @Override
    public String toString() {
        return "Goods{" +
                "name='" + name + '\'' +
                ", price=" + price +
                '}';
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public Goods(String name, double price) {
        this.name = name;
        this.price = price;
    }

    public Goods() {
    }

    //指明商品比较大小的原则:按照价格从低到高排序
    @Override
    public int compareTo(Object o){
        if(o instanceof Goods){
            Goods goods=(Goods) o;
//            //方式一:
//            if(this.price>goods.price)
//                return 1;
//            else if(this.price<goods.price)
//                return -1;
//            else
//                return 0;
            //方式二:
            return Double.compare(this.price,goods.price);
        }
        //return 0;
        throw new RuntimeException("传入的数据类型不一致!");

    }


}
